Volume 20, Number 3—March 2014
Research
Coxiella burnetii Seroprevalence and Risk for Humans on Dairy Cattle Farms, the Netherlands, 2010–2011
Table 6
Variable | OR (95% CI) |
---|---|
No. cows on farm in 2008† |
1.0 (1.0–1.0) |
Farm region | |
South | 1.8 (1.2–2.8) |
Other |
Reference |
Beef cattle on farm | |
Yes | 1.7 (1.0–2.8) |
No |
Reference |
Automatic milking | |
Yes | 0.7 (0.4–1.0) |
No |
Reference |
Birds in stable | |
Yes | 2.0 (1.1–3.8) |
No |
Reference |
Use of by-product feedstuffs | |
Yes | 1.4 (1.0–2.0) |
No | Reference |
*The analysis included the primary farm-based characteristics associated with positivity (p<0.10 in likelihood ratio test). The number of observations was 716; the number of levels used was 309 (quasi-likelihood under the independence model criterion 832.88). OR, odds ratio.
†Risk increased per cow.
1These authors contributed equally to this article.
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